Resources

RRS Discovery D262

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD262
Cruise period2002-04-18 — 2002-05-26
StatusCompleted
Port of departureSouthampton, United Kingdom
Port of returnFairlie, United Kingdom
PurposeResearch
ObjectivesRRS Discovery cruise 262 was the second of four cruises supported by the NERC Marine Productivity (MarProd) thematic programme.
The specific objectives of the cruise were: 1) To map the physical features of the survey region (Irminger Sea and parts of the Iceland Basin) in terms of water mass distribution, velocity field and mixed layer properties; 2) Obtain additional information to estimate future water mass fluxes and particle trajectories, via the deployment of additional floats; 3) Collect water samples for plant pigment and microscopic analyses, to estimate the biomass of different taxonomic/functional groups of microplankton; 4) Measure high resolution profiles of inorganic nutrient concentrations; 5) Determine the 3D abundance of the mesoplankton of interest (primarily Calanus finmarchicus ), and their planktivorous predators (primarily euphusid spp), obtaining material for further taxonomic, physiological and biochemical studies.
In addition a number of process studies where undertaken: 1) Calanus egg production and naupliae development; 2) Influence of the food quality on Calanus egg production; 3) Oithona and Calanus naupliae feeding experiments; 4) Oithona egg production; 5) Lipids and Hormones; 6) C/N and stable isotope ratios.
The cruise track was chosen to allow sampling of a number of different provinces, namely the Icelandic and Greenland Shelves, the Reykjanes Ridge, and the deep basin. There were boat transfers on 24 April off Reykjavik to allow calibration of the EK500 systems.
Chief scientistKelvin Richards (University of Southampton School of Ocean and Earth Science)
ProjectMarine Productivity
Coordinating bodyUK-NERC
Cruise reportRRS Discovery D262 cruise report d262.pdf (3.28 MB) 
Ocean/sea areas 
GeneralEnglish Channel
North Atlantic Ocean
Irish Sea and St. George's Channel
Track chartsRRS Discovery D262 cruise track — d262trk.pdf (0.46 MB) 
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of deployments = 25
Description: ARIES towed zooplankton multinet system with CTD, fluorometer, transmissometer, OPC, water bottle sampler for sal and chl calibration samples and nutrients, and zooplankton net systems (discrete and integrated).
Water bottle stationsQuantity: number of profiles = 65
Description: CTD with oxygen sensor, fluorometer, transmissometer, nephelometer and bottle firing rosette (sal, oxygen and chl calibration samples plus nutrients).
Water bottle stationsQuantity: number of deployments = 23
Description: Ocean Sampler towed multinet system with water sampling system and OPC
CTD stationsQuantity: number of profiles = 65
Description: CTD with oxygen sensor, fluorometer, transmissometer, nephelometer and bottle firing rosette (sal, oxygen and chl calibration samples plus nutrients).
Subsurface temperature and salinity measurementsQuantity: activity duration in days = 38
Description: ship's underway navigation, sea surface (thermosalinograph, transm, fluor and FRRF) and meterorogical measurements plus 75 and 150 kHz VM-ADCP and wave measurements.
Transparency (eg transmissometer)Quantity: number of deployments = 25
Description: ARIES towed zooplankton multinet system with CTD, fluorometer, transmissometer, OPC, water bottle sampler for sal and chl calibration samples and nutrients, and zooplankton net systems (discrete and integrated).
Transparency (eg transmissometer)Quantity: number of profiles = 65
Description: CTD with oxygen sensor, fluorometer, transmissometer, nephelometer and bottle firing rosette (sal, oxygen and chl calibration samples plus nutrients).
Transparency (eg transmissometer)Quantity: activity duration in days = 38
Description: ship's underway navigation, sea surface (thermosalinograph, transm, fluor and FRRF) and meterorogical measurements plus 75 and 150 kHz VM-ADCP and wave measurements.
Optics (eg underwater light levels)Quantity: number of deployments = 25
Description: ARIES towed zooplankton multinet system with CTD, fluorometer, transmissometer, OPC, water bottle sampler for sal and chl calibration samples and nutrients, and zooplankton net systems (discrete and integrated).
Current profiler (eg ADCP)Quantity: activity duration in days = 38
Description: ship's underway navigation, sea surface (thermosalinograph, transm, fluor and FRRF) and meterorogical measurements plus 75 and 150 kHz VM-ADCP and wave measurements.
Current profiler (eg ADCP)Quantity: number of profiles = 65
Description: 300 and 600 kHz ADCP mounted on CTD frame
Instrumented wave measurementsQuantity: activity duration in days = 38
Description: ship's underway navigation, sea surface (thermosalinograph, transm, fluor and FRRF) and meterorogical measurements plus 75 and 150 kHz VM-ADCP and wave measurements.
Chemical oceanography 
OxygenQuantity: number of profiles = 65
Description: CTD with oxygen sensor, fluorometer, transmissometer, nephelometer and bottle firing rosette (sal, oxygen and chl calibration samples plus nutrients).
PhosphateDescription: Nutrient profiles at CTD and ARIES stations and 4-h underway sampling.
NitrateDescription: Nutrient profiles at CTD and ARIES stations and 4-h underway sampling.
SilicateDescription: Nutrient profiles at CTD and ARIES stations and 4-h underway sampling.
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of deployments = 25
Description: ARIES towed zooplankton multinet system with CTD, fluorometer, transmissometer, OPC, water bottle sampler for sal and chl calibration samples and nutrients, and zooplankton net systems (discrete and integrated).
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: activity duration in days = 38
Description: ship's underway navigation, sea surface (thermosalinograph, transm, fluor and FRRF) and meterorogical measurements plus 75 and 150 kHz VM-ADCP and wave measurements.
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 276
Description: Total chlorophyll concentration from CTD, ARIES, Ocean Sampler stations and underway sampling
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 38
Description: Samples for HPLC pigments analysis and for picoplankton flow cytometry analysis from CTD rosette.
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of profiles = 65
Description: CTD with oxygen sensor, fluorometer, transmissometer, nephelometer and bottle firing rosette (sal, oxygen and chl calibration samples plus nutrients).
Particulate organic matter (inc POC, PON)Quantity: number of stations = 20
Description: Microplankton samples from CTD stations for total and size fractionated CN and stable isotope analyses.
Biochemical measurements (eg lipids, amino acids)Quantity: number of stations = 20
Description: Microplankton samples from CTD stations for total and size fractionated CN and stable isotope analyses.
Biochemical measurements (eg lipids, amino acids)Quantity: number of hauls = 23
Description: Dual Methot net deployments
Biochemical measurements (eg lipids, amino acids)Quantity: number of specimens = 228
Description: Underway collection of planktonic foraminifera for genotyping
Biochemical measurements (eg lipids, amino acids)Description: 1 m diameter, 250 micron mesh zooplankton net (50 m vertical hauls)
Biochemical measurements (eg lipids, amino acids)Quantity: number of stations = 40
Description: 63 and 200 micron mesh zooplankton nets (120 m vertical hauls)
Biochemical measurements (eg lipids, amino acids)Quantity: number of deployments = 25
Description: ARIES towed zooplankton multinet system with CTD, fluorometer, transmissometer, OPC, water bottle sampler for sal and chl calibration samples and nutrients, and zooplankton net systems (discrete and integrated).
PhytoplanktonQuantity: number of stations = 38
Description: Phytoplankton and microzooplankton samples from 3 depths from CTD and Ocean Sampler stations (Lugol and formalin fixatives).
PhytoplanktonQuantity: number of stations = 38
Description: Samples for HPLC pigments analysis and for picoplankton flow cytometry analysis from CTD rosette.
PhytoplanktonQuantity: number of stations = 20
Description: Microplankton samples from CTD stations for total and size fractionated CN and stable isotope analyses.
ZooplanktonQuantity: number of specimens = 228
Description: Underway collection of planktonic foraminifera for genotyping
ZooplanktonQuantity: number of stations = 38
Description: Phytoplankton and microzooplankton samples from 3 depths from CTD and Ocean Sampler stations (Lugol and formalin fixatives).
ZooplanktonQuantity: number of stations = 20
Description: Microplankton samples from CTD stations for total and size fractionated CN and stable isotope analyses.
ZooplanktonQuantity: number of deployments = 25
Description: ARIES towed zooplankton multinet system with CTD, fluorometer, transmissometer, OPC, water bottle sampler for sal and chl calibration samples and nutrients, and zooplankton net systems (discrete and integrated).
ZooplanktonQuantity: number of stations = 40
Description: 63 and 200 micron mesh zooplankton nets (120 m vertical hauls)
ZooplanktonQuantity: number of hauls = 23
Description: Dual Methot net deployments
ZooplanktonDescription: 1 m diameter, 250 micron mesh zooplankton net (50 m vertical hauls)
ZooplanktonQuantity: number of deployments = 23
Description: Ocean Sampler towed multinet system with water sampling system and OPC
Eggs and larvaeQuantity: number of stations = 40
Description: 63 and 200 micron mesh zooplankton nets (120 m vertical hauls)
Pelagic bacteria/micro-organismsQuantity: number of stations = 38
Description: Samples for HPLC pigments analysis and for picoplankton flow cytometry analysis from CTD rosette.
Acoustic reflection on marine organisms.Quantity: number of stations = 20
Description: Lowered EK500 scientific echosounder
Acoustic reflection on marine organisms.Quantity: number of deployments = 44
Description: Towed EK500 Scientific Echosounder
Other biological/fisheries measurementQuantity: number of stations = 40
Description: 63 and 200 micron mesh zooplankton nets (120 m vertical hauls)
Other biological/fisheries measurementQuantity: number of hauls = 23
Description: Dual Methot net deployments
Other biological/fisheries measurementQuantity: number of deployments = 23
Description: Ocean Sampler towed multinet system with water sampling system and OPC
Other biological/fisheries measurementQuantity: number of specimens = 228
Description: Underway collection of planktonic foraminifera for genotyping
Other biological/fisheries measurementDescription: 1 m diameter, 250 micron mesh zooplankton net (50 m vertical hauls)
Other biological/fisheries measurementQuantity: number of deployments = 25
Description: ARIES towed zooplankton multinet system with CTD, fluorometer, transmissometer, OPC, water bottle sampler for sal and chl calibration samples and nutrients, and zooplankton net systems (discrete and integrated).
Meteorology 
Incident radiationQuantity: activity duration in days = 38
Description: ship's underway navigation, sea surface (thermosalinograph, transm, fluor and FRRF) and meterorogical measurements plus 75 and 150 kHz VM-ADCP and wave measurements.
Routine standard measurementsQuantity: activity duration in days = 38
Description: ship's underway navigation, sea surface (thermosalinograph, transm, fluor and FRRF) and meterorogical measurements plus 75 and 150 kHz VM-ADCP and wave measurements.
Moorings, landers, buoys 
Physical oceanography 
Other physical oceanographic measurements60° 43' 59" N  35° 13' 0" W — APEX 438 (11067, ACEF8)
Other physical oceanographic measurements61° 19' 0" N  38° 13' 59" W — APEX 440 (11071, ACFE7)
Other physical oceanographic measurements60° 32' 59" N  32° 4' 59" W — Martec PROVOR 35 (30109, D6770)
Biology and fisheries 
Other biological/fisheries measurement61° 7' 0" N  36° 51' 0" W — APEX 437 (11061, ACD7F)
Data held at BODC Get data
Discrete samples 
4  1 metre diameter zooplankton ring net
69  CTD frame plus rosette samplerDissolved total and organic nitrogen concentrations in the water column
Phytoplankton taxonomic biomass in water bodies
Phytoplankton generic biomass in water bodies
Zooplankton taxonomy-related abundance per unit volume of the water column
Density of the water column
Zooplankton chemical composition
Transmittance and attenuance of the water column
Biological detritus in the water column suspended particulate material
Microzooplankton taxonomy-related biomass expressed as carbon per unit volume of the water column
Metadata parameters
Chlorophyll pigment concentrations in water bodies
Phytoplankton taxonomic abundance in water bodies
Silicate concentration parameters in the water column
Zooplankton egg hatch proportion
Salinity of the water column
Concentration of suspended particulate material in the water column
Zooplankton non taxonomy-related abundance per unit volume of the water column
Temperature of the water column
Carotenoid and flavenoid pigment concentrations in water bodies
Zooplankton reproduction rate parameters
Nitrate concentration parameters in the water column
Phosphate concentration parameters in the water column
Phytoplankton generic abundance in water bodies
Dissolved oxygen parameters in the water column
Experiment state variables
Microzooplankton taxonomic abundance in water bodies
23  Dual Methot netZooplankton taxonomy-related abundance per unit volume of the water column
Zooplankton and zoobenthos morphological parameters
Zooplankton and zoobenthos development stage parameters
Stable isotopes in biota
Metadata parameters
Concentration of other substances in biota
21  Lowered EK-500 acoustic profiler
25  MarLab Aberdeen ARIES net and environmental sampling systemZooplankton taxonomy-related abundance per unit volume of the water column
Zooplankton and zoobenthos morphological parameters
Fish abundance in water bodies
Density of the water column
Zooplankton chemical composition
Transmittance and attenuance of the water column
Zooplankton and zoobenthos development stage parameters
Metadata parameters
Chlorophyll pigment concentrations in water bodies
Silicate concentration parameters in the water column
Salinity of the water column
Horizontal spatial co-ordinates
Temperature of the water column
Nitrate concentration parameters in the water column
Phosphate concentration parameters in the water column
Reference numbers
Date and time
24  Marine Lab Aberdeen Ocean Sampler netZooplankton taxonomy-related abundance per unit volume of the water column
Fish abundance in water bodies
Zooplankton and zoobenthos development stage parameters
Microzooplankton taxonomy-related biomass expressed as carbon per unit volume of the water column
Metadata parameters
Chlorophyll pigment concentrations in water bodies
Zooplankton non taxonomy-related abundance per unit volume of the water column
Microzooplankton taxonomic abundance in water bodies
535  Sample taken from ship's non-toxic supplyZooplankton chemical composition
Metadata parameters
Chlorophyll pigment concentrations in water bodies
Silicate concentration parameters in the water column
Salinity of the water column
Zooplankton reproduction rate parameters
Nitrate concentration parameters in the water column
Phosphate concentration parameters in the water column
Experiment state variables
4  Twin WP-2 net mounted on a frameZooplankton taxonomy-related abundance per unit volume of the water column
Zooplankton and zoobenthos morphological parameters
Metadata parameters
Zooplankton feeding
Zooplankton reproduction rate parameters
39  Unspecified zooplankton net or netsZooplankton taxonomy-related abundance per unit volume of the water column
Zooplankton and zoobenthos morphological parameters
Zooplankton chemical composition
Zooplankton non taxonomy-related biomass expressed as carbon per unit volume of the water column
Metadata parameters
Zooplankton non taxonomy-related abundance per unit volume of the water column
Zooplankton feeding
Zooplankton reproduction rate parameters
1  WP-2 zooplankton netZooplankton non taxonomy-related biomass expressed as carbon per unit volume of the water column
Metadata parameters
Zooplankton non taxonomy-related abundance per unit volume of the water column
1  Water bottle hydrocast